222243125 has 40 divisors (see below), whose sum is σ = 316867320. Its totient is φ = 154368000.

The previous prime is 222243121. The next prime is 222243149. The reversal of 222243125 is 521342222.

It can be written as a sum of positive squares in 20 ways, for example, as 191794801 + 30448324 = 13849^2 + 5518^2 .

It is not a de Polignac number, because 222243125 - 2² = 222243121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222243125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222243121) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 137321 + ... + 138929.

It is an arithmetic number, because the mean of its divisors is an integer number (7921683).

Almost surely, 2^222243125 is an apocalyptic number.

222243125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

222243125 is a deficient number, since it is larger than the sum of its proper divisors (94624195).

222243125 is a wasteful number, since it uses less digits than its factorization.

222243125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659 (or 1644 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 222243125 is about 14907.8209339930. The cubic root of 222243125 is about 605.7258551159.

Adding to 222243125 its reverse (521342222), we get a palindrome (743585347).

The spelling of 222243125 in words is "two hundred twenty-two million, two hundred forty-three thousand, one hundred twenty-five".